Efficient and general protocols for the O-tert-boc protection and O-arylation of phenols were developed in this paper using a recyclable magnetic Fe₃O₄-Co₃O₄ nanocatalyst (Nano-Fe-Co), which is easily accessible via simple wet impregnation techniques in aqueous mediums from inexpensive precursors. The results showed the catalysts were well characterized by XRD (X-ray Diffraction), ICP-AES (Inductive Coupled Plasma Atomic Emission Spectroscopy), TEM (Transmission Electron Microscopy), TOF-SIMS (Time-Of-Flight Secondary Ion Mass Spectrometry) and XPS (X-ray Photoelectron Spectroscopy). The O-tert-boc protection and O-arylation of phenols was accomplished in good to excellent yields (85–95%) and the catalyst was reusable and recyclable with no loss of catalytic activity for at least six repetitions.

Division of Chemistry Department of Sciences and Humanities Vignan's Foundation for Science Technology and Research Vadlamudi Guntur 522213 India

P G and Research Center Department of Chemistry S S G M College Kopargaon Dist Ahmednagar 423601 India

Regional Centre of Advanced Technologies and Materials Faculty of Science Department of Physical Chemistry Palacky University Šlechtitelů 27 78371 Olomouc Czech Republic

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